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powerpc/44x: Support OCM(On Chip Memory) for APM821xx SoC and Bluestone board

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This patch consists of:
- Add driver for OCM component
- Export OCM Information at /sys/kernel/debug/ppc4xx_ocm/info

Signed-off-by: Vinh Nguyen Huu Tuong <vhtnguyen@apm.com>
Acked-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Vinh Nguyen Huu Tuong
2012-07-02 22:52:30 +00:00
committed by Benjamin Herrenschmidt
parent 0388c79c99
commit c19d824862
5 changed files with 477 additions and 0 deletions
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8
arch/powerpc/platforms/44x/Kconfig
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@@ -252,6 +252,14 @@ config PPC4xx_GPIO
help
Enable gpiolib support for ppc440 based boards
config PPC4xx_OCM
bool "PPC4xx On Chip Memory (OCM) support"
depends on 4xx
select PPC_LIB_RHEAP
help
Enable OCM support for PowerPC 4xx platforms with on chip memory,
OCM provides the fast place for memory access to improve performance.
# 44x specific CPU modules, selected based on the board above.
config 440EP
bool